CN102781403B - 耐光遮光组合物 - Google Patents
耐光遮光组合物 Download PDFInfo
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- CN102781403B CN102781403B CN201180008384.6A CN201180008384A CN102781403B CN 102781403 B CN102781403 B CN 102781403B CN 201180008384 A CN201180008384 A CN 201180008384A CN 102781403 B CN102781403 B CN 102781403B
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- acid
- dibenzoyl methane
- alcohol
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- NZZIMKJIVMHWJC-UHFFFAOYSA-N dibenzoylmethane Chemical compound C=1C=CC=CC=1C(=O)CC(=O)C1=CC=CC=C1 NZZIMKJIVMHWJC-UHFFFAOYSA-N 0.000 claims abstract description 27
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- -1 Acyl methane Chemical compound 0.000 claims description 23
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Abstract
本发明涉及包含遮光剂的耐光遮光组合物,更特别涉及包含二苯甲酰甲烷遮光剂的乳状液或微乳液形式的液体组合物。本发明的一个目的是提供包含二苯甲酰甲烷遮光剂的耐光组合物,其中采用易得和便宜的成分实现稳定化。本发明人已经令人惊讶地发现,可以在具有所选量的规定成分的特定液体乳状液或微乳液制剂中稳定包含二苯甲酰甲烷或其衍生物的化妆品组合物。
Description
技术领域
本发明涉及包含遮光剂的耐光遮光组合物,更特别涉及包含二苯甲酰甲烷遮光剂的乳状液或微乳液形式的液体组合物。
发明背景
太阳辐射包括大约5%的紫外线(UV)辐射,其波长为200纳米至400纳米。其进一步分成三个区域:320至400纳米(UV-A)、290至320纳米(UV-B)和200至290纳米(UV-C)。大部分UV-C辐射被臭氧层吸收。科学研究已表明,短时间暴露在UV-A和UV-B辐射下造成皮肤变红和局部刺激,而持续长期暴露会造成晒伤、黑色素瘤和皱纹形成。也报道了UV辐射对头发造成显著破坏。因此希望保护皮肤和人体的其它角蛋白基质免受UV-A和UV-B辐射的有害影响。
已经报道了用于防止皮肤受到和/或保护皮肤免受紫外线辐射的有害影响的各种化妆品。在化妆品领域中报道了能够吸收UV-A射线的许多有机遮光剂,其中特别有用的遮光剂是二苯甲酰甲烷类别。对甲氧基肉桂酸及其衍生物广泛用作UV-B遮光剂。许多化妆品制造商更喜欢在光防护组合物中包括UV-A和UV-B遮光剂以在整个UV辐射范围内提供保护。
二苯甲酰甲烷及其衍生物已知对紫外线辐射相对敏感,它们在日光作用下迅速分解。在UV-B遮光剂,尤其是对甲氧基肉桂酸及其衍生物存在下加速这种分解。由于二苯甲酰甲烷及其衍生物在UV-B遮光剂,尤其是对甲氧基肉桂酸及其衍生物存在下的光化学不稳定性,不能在长期日照过程中确保持续保护。这因此要求使用者以规律和频繁的时间间隔反复涂施以保持对紫外线的有效防护。
二苯甲酰甲烷及其衍生物的稳定化因此重要,以便使用者完全利用其效力和不必求助于频繁涂施。
已经报道了用于稳定化妆品制剂中的二苯甲酰甲烷及其衍生物的各种方法。
US 5 985 251 (Roche Vitamins, 1999)描述了遮光化妆品,其中通过掺入0.5至12重量%的3,3-二苯基丙烯酸酯衍生物或亚苄基樟脑衍生物来稳定包含二苯甲酰甲烷衍生物和对甲氧基肉桂酸衍生物的组合物。
US5576354 (L'Oreal, 1996)公开了用于保护人表皮抵御波长280至380纳米的紫外线的耐光化妆品防晒组合物和方法,该组合物具有至少一个脂肪相、1至5重量%的二苯甲酰甲烷衍生物和至少1 重量%的给定式的β-β-二苯基丙烯酸烷基酯或α-氰基-β-β-二苯基丙烯酸酯,给定式的化合物与二苯甲酰甲烷的摩尔比不小于0.8。
3,3-二苯基丙烯酸酯衍生物或亚苄基樟脑衍生物本身是昂贵的遮光剂并因此增加该组合物的成本。研究人员,包括本发明人,因此一直在寻找对该问题的更简单解决方案,其涉及使用更常见的成分的组合解决这一问题。
因此需要包含尤其在对甲氧基肉桂酸或其衍生物存在下稳定的二苯甲酰甲烷或其衍生物的化妆品组合物,其中基本不需要专用聚合物和/或额外的遮光剂稳定剂。高度合意的是用易得成分稳定化的化妆品组合物,由此降低配制复杂性和显著降低成本。
本申请人过去研究已研究出作为WO 2008/022946公开的一种方法,其公开了可通过掺入脂肪醇乙氧基化物和聚烷撑二醇的组合来稳定化的包含二苯甲酰甲烷或其衍生物和对甲氧基肉桂酸或其衍生物的化妆品组合物。本发明人已经令人惊讶地发现,可以在具有所选量的规定成分的特定液体乳状液或微乳液制剂中稳定包含二苯甲酰甲烷或其衍生物的化妆品组合物。
因此本发明的一个目的是消除现有技术的至少一些缺陷,并提供耐光化妆品遮光组合物。
本发明的另一目的是提供包含二苯甲酰甲烷遮光剂的耐光组合物,其中采用易得和便宜的成分实现稳定化。
发明概述
根据一个方面,本发明涉及液体乳状液或微乳液形式的耐光遮光组合物,包含,
a. 0.1 %至10 重量%的二苯甲酰甲烷或其衍生物;
b. 10至40重量%的乳化剂;
c. 5至40重量%的选自C2至C8直链或支化醇、多元醇和C5至C8低分子量脂肪酸的辅助乳化剂;
d. 10至60重量%的在25ºC下log P值大于3和在25ºC下水溶度小于0.1重量%的疏水液体;和
e. 10至50重量%水。
根据优选方面,该组合物是含有在4至100纳米尺寸范围内的分散相微滴的微乳液形式。
发明详述
本领域普通技术人员在阅读下列详述和所附权利要求时容易看出这些和其它方面、特征和优点。为避免疑问,本发明的一个方面的任何特征可用于本发明的任何其它方面。词语“包含”意在表示“包括”但不一定“由...构成”或“由...组成”。换言之,所列步骤或选项不需要是穷举的。要指出,下列描述中给出的实例意在阐明本发明而无意将本发明限于这些实例本身。类似地,除非另行指明,所有百分比为重量/重量百分比。除了在实施例和对比例中或在另行明示之处外,本说明书和权利要求书中指示材料量或反应条件、材料物理性质和/或用途的所有数值应被理解为用词语“大约”修饰。以“x至y”格式表示的数值范围被理解为包括x和y。当对特定要素而言,以“x至y”格式描述多个优选范围时,要理解的是,还考虑组合不同端点的所有范围。
本文所用的术语“光防护遮光组合物”意在包括用于局部施加到哺乳动物,尤其是人类的皮肤和/或头发的日光照射区域上的组合物。这种组合物通常可分类为免洗或洗除型,并包括也为了改善外观、清洁、气味控制或一般美观而施加到人体上的任何产品。本发明的组合物可以是液体、洗液、霜、泡沫、磨砂膏、凝胶、皂条或化妆水(toner)形式,或用工具或经面膜、棉片(pad)或贴剂(patch)施加。光防护遮光组合物的非限制性实例包括免洗护肤液和霜、香波、护发素、沐浴凝胶、皂条、止汗剂、除臭剂、唇膏、粉底、睫毛膏、免晒美黑产品(sunless tanners)和遮光剂乳液。本文所用的“皮肤”意在包括面部和身体(例如颈、胸、背、手臂、腋下、手、腿、臀部和头皮)上的皮肤,尤其是其日光照射部位。本发明的组合物也可施加在人体的除皮肤外的任何其它角蛋白基质,例如头发上,其中可以以提供光防护的特定目标配制产品。
“耐光遮光组合物”是指比此前已知的类似遮光组合物更稳定和/或以更低成本或用在该组合物中更相容的成分提供这种耐光性的组合物。该耐光性优选使得在日光照射30分钟后二苯甲酰甲烷优选以至少65%,更优选至少70%存在。
本发明涉及液体乳状液或微乳液形式的遮光组合物,其包含选自二苯甲酰甲烷或其衍生物的UVA遮光剂、乳化剂、选自C2至C8直链或支链醇、多元醇和C5至C8低分子量脂肪酸的辅助乳化剂、具有大于3的在25ºC下的log P值和小于0.1重量%的在25ºC下的水溶度的疏水液体;和水,所有这些都为特定量。
本发明的组合物是液体形式。其可以是乳状液或微乳液。微乳液是指水、油和两亲物的单相热力学稳定的各向同性液体。它们以超低界面张力和灵活的油-水界面为特征。这些可以通过给定油-水体系的表面活性剂和辅助表面活性剂的适当选择满足。微乳液在成分简单混合时自发形成并且不需要高剪切或能量输入。由于高度灵活的界面,微乳液可以在从微滴状溶胀胶束到双连续结构的各种结构之间演变。双连续微乳液使普通“水包油”和“油包水”区别无关。微乳液中的微滴尺寸通常在10-100纳米的尺寸范围内。因此该微乳液看起来透明,因为微滴尺寸小于可见光的波长。另一方面,乳状液是通过高剪切混合形成的水、油和两亲物的动力学稳定(热力学不稳定)混合物。乳状液中的微滴是一个相分散到另一个相中的大致球形微滴。乳状液中的微滴尺寸(1-20微米)大到足以散射光,因此它们看起来浑浊。
当本发明的组合物是微乳液形式时,其优选透明。透明液体微乳液形式的该组合物尤其优选,因为透明形式有助于对消费者而言产生吸引力的视觉冲击。术语透明或半透明组合物是指该组合物具有0至200比浊法浊度单位(NTU),优选小于100 NTU,更优选小于10 NTU的浊度值。使用Merck Turbiquant 1500T浊度计测量以NTU为单位的浊度。浊度是由光学性质不同于悬浮流体的独立悬浮颗粒(固体)或微滴(液体)的存在造成的流体浑浊度或混浊度。悬浮颗粒/微滴对光束的散射程度被认为是浊度的有意义量度标准。由此测得的浊度使用带有朝光束侧设置的检测器的被称作浊度计的仪器。如果来自悬浮颗粒的散射程度较高,则到达检测器的光量较高。来自校准的浊度计的浊度单位被称作比浊法浊度单位(NTU)。悬浮颗粒/微滴散射的光程度取决于它们的浓度、尺寸、形状和相对光学性质。更重要地,本发明的微乳液形式的遮光组合物看起来比乳状液形式更稳定。在优选方面中,微乳液中的分散相微滴在4至100纳米的尺寸范围内,更优选在4至50纳米的尺寸范围内。
本发明的组合物包含0.1至10重量%的二苯甲酰甲烷或其衍生物。优选的二苯甲酰甲烷衍生物选自4-叔丁基-4'-甲氧基二苯甲酰甲烷、2-甲基二苯甲酰甲烷、4-甲基-二苯甲酰-乙烷、4-异丙基二苯甲酰甲烷、4-叔丁基二苯甲酰甲烷、2,4-二甲基二苯甲酰甲烷、2,5-二甲基二苯甲酰甲烷、4,4'-二异丙基-二苯甲酰甲烷、2-甲基-5-异丙基-4'-甲氧基二苯甲酰甲烷、2-甲基-5-叔丁基-4'-甲氧基-二苯甲酰甲烷、2,4-二甲基-4'-甲氧基二苯甲酰甲烷或2,6-二甲基-4-叔丁基-4'-甲氧基-二苯甲酰甲烷。最优选的二苯甲酰甲烷衍生物是4-叔丁基-4'-甲氧基二苯甲酰甲烷。二苯甲酰甲烷或其衍生物优选以该组合物的0.1至5%,更优选0.2至5%,更优选0.4至3重量%存在。
本发明的组合物包含10至40%,更优选10至30重量%的乳化剂。该乳化剂优选是表面活性剂,即溶解在水中时将表面张力从大约72达因/平方厘米的值降至小于10达因/平方厘米,更优选小于5达因/平方厘米的表面活性剂。该乳化剂优选是阴离子型或非离子型,更优选非离子型的。用于本发明的优选非离子型表面活性剂选自聚乙二醇单乙醚(Brij)、聚山梨醇酯(Tween)、醇乙氧基化物或脂肪酸的聚氧乙烯酯。充当本发明中的乳化剂的表面活性剂优选具有大于8的HLB值。
本发明的组合物包含5至40%,优选5至30重量%的选自C2至C8直链或支化醇、多元醇或C5至C8低分子量脂肪酸的辅助乳化剂。更优选的辅助乳化剂选自短链醇、二醇、多元醇或脂肪酸。最优选的辅助乳化剂是乙醇、丙醇、丁醇、聚乙二醇、丙二醇或辛酸。
本发明的组合物包含10至60%,优选10至50%,更优选10至40重量%的具有大于3的在25ºC下的log P值和小于0.1重量%的在25ºC下的水溶度的疏水液体。Log P是在文章Hiroshi Chuman、Atsushi Mori和Hideji Tanaka, "Prediction of the 1-Octanol/H2OPartition Coefficient, Log P, by Ab Initio MO Calculations: Hydrogen-BondingEffect of Organic Solutes on Log P", Analytical Sciences, 2002年9月, 第18卷,1015-1020中定义的性质。Log P基本是1-辛醇/水分配系数并在实验中通过摇瓶法测定。
具有大于3.0的在25ºC下的log P值和小于0.1重量%的在25ºC下的水溶度的疏水液体包括烃,例如辛烷、壬烷、癸烷、十二烷、十六烷、石蜡油;醇,例如十二烷醇、油醇;酸,例如油酸;醛,例如十二醛、十六醛;酮,例如甲基壬基酮;酯,例如硬脂酸甲酯、花生酸甲酯、棕榈脂肪酸酯;醚,例如二异戊基醚、二己基醚、二庚基醚、二辛基醚、二癸基醚。用在本发明的组合物中的更优选疏水液体是烃、中链或长链脂肪醇、脂肪醇酯、甘油三酯、脂肪酸或硅油。根据本发明最优选的疏水液体是LLPO(轻液态石蜡油)、IPM(肉豆蔻酸异丙酯)、IPP(棕榈酸异丙酯)或硅油。
该疏水液体在25ºC下的水溶度优选小于0.01%,更优选小于0.001重量%。
该组合物包含10至50%,优选10至40重量%水。乳化剂、辅助乳化剂、亲水液体和水的使用是微乳液制备中公知的。但是,本发明中的出乎意料的要素在于,特定微乳液和接近微乳液界限的特定乳状液造成二苯甲酰甲烷化合物和它们的衍生物在其中存在时的提高的稳定性。
该组合物可另外包含其它UV-A或UV-B遮光剂或物理防晒剂(sunblock)以提供更完整的防晒(sun protection)。其中,在光防护遮光组合物中通常掺入至少一种UV-B遮光剂和至少一种无机防晒剂。优选的UV-B遮光剂是对甲氧基肉桂酸或其衍生物。优选的衍生物选自2-乙基己基-对甲氧基肉桂酸酯、对甲氧基肉桂酸铵、对甲氧基肉桂酸钠、对甲氧基肉桂酸钾或对甲氧基肉桂酸的伯胺、仲胺或叔胺的盐,其更优选为2-乙基己基-对甲氧基肉桂酸酯。本发明的非常优选的方面掺入按重量计0.1%至10%,更优选0.1至5%对甲氧基肉桂酸或其衍生物。最优选的对甲氧基肉桂酸衍生物是2-乙基己基-4-甲氧基肉桂酸酯。掺入对甲氧基肉桂酸衍生物尤其有用,因为除提供已知的UV-B防护外,该液体乳状液或微乳液组合物确保二苯甲酰甲烷衍生物在对甲氧基肉桂酸衍生物存在下的更好稳定性。
在本发明中优选使用可用的无机防晒剂。这些包括例如氧化锌、氧化铁、二氧化硅如煅制二氧化硅,和二氧化钛。
其两种形式之一的超细二氧化钛,即水分散性二氧化钛和油分散性二氧化钛,尤其适用于本发明。水分散性二氧化钛是超细二氧化钛,其颗粒未涂布或涂布以赋予该颗粒亲水表面性质的材料。这种材料的实例包括氧化铝和硅酸铝。
油分散性二氧化钛是超细二氧化钛,其颗粒表现出疏水表面性质并为此可以被金属皂,如硬脂酸铝、月桂酸铝或硬脂酸锌或被有机硅化合物(organosilicone)涂布。
“超细二氧化钛”是指数均初级粒度小于100纳米,优选70纳米或更小,更优选10至40纳米,最优选15至25纳米的二氧化钛颗粒。
通过水分散性超细二氧化钛和油分散性超细二氧化钛的混合物局部施加到皮肤上,可实现对UV-A和UV-B射线的有害作用的协同增强的皮肤防护。
超细二氧化钛是根据本发明的优选无机防晒剂。优选并入本发明的组合物中的无机防晒剂的总量为该组合物的0.1至5重量%。
本发明的组合物还可包含其它稀释剂。稀释剂充当该组合物中存在的其它材料的分散剂或载体,以在将该组合物施加到皮肤上时利于它们的分布。
非水稀释剂包括液体或固体润肤剂、溶剂、保湿剂、增稠剂和粉末。可单独使用或作为一种或多种赋形剂的混合物使用的这些类型的赋形剂各自的实例如下:
润肤剂,如硬脂醇、单蓖麻醇酸甘油酯、貂油、鲸蜡醇、异硬脂酸异丙酯、硬脂酸、棕榈酸异丁酯、硬脂酸异鲸蜡酯、油醇、月桂酸异丙酯、月桂酸己酯、油酸癸酯、十八烷-2-醇、异鲸蜡醇、二十烷醇(eicosanyl alcohol)、山嵛醇、棕榈酸鲸蜡酯、硅油如二甲基聚硅氧烷、硬脂酸二正丁酯、肉豆蔻酸异丙酯、棕榈酸异丙酯、硬脂酸异丙酯、硬脂酸丁酯、聚乙二醇、三乙二醇、羊毛脂、椰子油、玉米油、棉籽油、橄榄油、棕榈仁油、菜籽油、红花籽油、月见草油、大豆油、葵花籽油、鳄梨油、芝麻籽油、椰子油、花生油、蓖麻油、乙酰化羊毛脂醇、凡士林、矿物油、肉豆蔻酸丁酯、异硬脂酸、棕榈酸、亚油酸异丙酯、乳酸月桂酯、乳酸肉豆蔻酯、油酸癸酯、肉豆蔻酸肉豆蔻酯;
溶剂,如乙醇、异丙醇、丙酮、乙二醇单乙醚、二乙二醇单丁醚、二乙二醇单乙醚;
粉末,如白垩、滑石、漂白土、高岭土、淀粉、树胶、胶态二氧化硅聚丙烯酸钠、四烷基和/或三烷基芳基铵蒙脱石、化学改性的硅酸镁铝、有机改性的蒙脱土、水合硅酸铝、煅制二氧化硅、羧乙烯基聚合物(carboxyvinyl polymer)、羧甲基纤维素钠和乙二醇单硬脂酸酯。
化妆品可接受的基质通常为该组合物的10至99.9%,优选50至99重量%,并在不存在其它化妆品辅助剂的情况下构成该组合物的余量。
本发明的组合物可包含常规除臭剂基质作为化妆品可接受的载体。除臭剂是指为个人除臭益处使用的、例如施加在腋下或任何其它区域的、可能含有或不含止汗活性剂的在滚涂或推进剂介质中的产品。
除臭剂组合物通常可以是凝胶、霜和液体形式并使用适合该组合物的物理特性的涂施器分配。
通过滚涂产品输递的除臭剂组合物通常包含液体载体。这种液体载体可以是疏水的或包含亲水和疏水液体的混合物。它们可以是乳状液或微乳液的形式。液体载体或载体混合物常常占该组合物的30至95重量%,在许多情况下40至80%。
本发明的止汗剂/除臭剂护肤组合物可进一步包括公知止汗金属盐——铝、锌、锆和锆铝混合物的硫酸盐、氯化物、氯氢氧化物、四氯水合甘氨酸盐(tetrachlorohydrexglycinates)、明矾、甲酸盐、乳酸盐、苄基磺酸盐、丁二酸盐、酚磺酸盐等。止汗剂/除臭剂的典型含量为该组合物的按重量计大约0%至大约35%,优选大约0%至大约25%。该组合物可进一步包括能与止汗金属盐形成络合物的络合剂,如有机酸或其衍生物。此类络合剂的实例包括,但不限于乙酸、丙酸、草酸、丙二酸、丁二酸、酒石酸、甘氨酸等以及它们的化妆品可接受的盐。络合剂的典型含量为该组合物的按重量计大约0%至大约15%,优选大约0%至大约10%。
本发明的组合物可包含多种其它任选组分。全文经此引用并入本文的CTFACosmetic Ingredient Handbook, 第2版, 1992描述了适用在本发明的组合物中的在护肤工业中常用的多种非限制性化妆品和药物成分。实例包括:抗氧化剂、粘合剂、生物添加剂、缓冲剂、着色剂、增稠剂、聚合物、收敛剂、香料、湿润剂、乳浊剂、调理剂、去角质剂、pH调节剂、防腐剂、天然提取物、香精油、皮肤感受剂(skin sensates)、皮肤舒缓剂和皮肤愈合剂。
现在借助下列非限制性实施例进一步描述本发明。
实施例
实施例1和2:与常规组合物相比本发明的遮光组合物的稳定性
制备常规遮光组合物(实施例1)和本发明的组合物(实施例2)。
在表1中给出霜形式的实施例1的组合物。根据下列方法制备霜组合物。
称出包含水、甘油、氢氧化钾和二氧化钛的水相并使用水浴在不断搅拌下加热至72至75 °C的温度。在侧罐(side pot)-1中,装入硬脂酸(hystearic acid)并加热至75 °C以便熔融。在侧罐-2中,称入由鲸蜡醇、苯氧基乙醇、肉豆蔻酸异丙酯、硅油和Parsol 1789构成的油相并加热至75 °C。将熔融的hystearic acid添加到75 °C的水中并使用Silverson混合机将该系统均化3至5分钟。然后加入来自侧罐-2的油相并再均化2至4分钟。然后在缓慢混合下将该乳状液冷却至室温(大约25 °C)直至获得所需粘度。
成分 | 重量% |
甘油 | 1.00 |
硬脂酸(Hysteric acid) | 18.00 |
氢氧化钾 | 0.67 |
鲸蜡醇 | 0.53 |
Parsol 1789 | 0.40 |
苯氧基乙醇 | 0.20 |
肉豆蔻酸异丙酯 | 0.75 |
硅油 | 0.50 |
二氧化钛 | 0.90 |
水 | 至100 |
在表2中给出实施例2的组合物。该组合物为液态透明微乳液形式。根据下列方法制备微乳液组合物。
为了制备微乳液,首先在烧杯中使用磁搅拌器将遮光剂溶解在疏水液体中。接着,将称出量的乳化剂和辅助乳化剂添加到该烧杯中。最后将所需量的水添加到该系统中。通过温和搅拌(手动或使用磁搅拌器)掺合组分以获得透明微乳液。
成分 | 重量% |
肉豆蔻酸异丙酯(疏水液体) | 14.00 |
Brij 35(乳化剂) | 28.00 |
1-丁醇(辅助乳化剂) | 28.00 |
Parsol 1789 | 0.40 |
水 | 至100 |
使用下列方法测量该制剂的稳定性。
使用SPF-290S (Optometries Corporation)测量该制剂的稳定性。
使用Transpore胶带(3M)作为基底以评估所有制剂的稳定性。将transpore胶带伸展在样品支架上并在其上施加2毫克/平方厘米的样品,使用注射器以小圆点形式均匀分布。使用石蜡膜(parafilm)作为指套,根据仪器制造商提供的程序垂直和水平地交替划动(swiping)以使样品均匀铺展在transpore上。使该膜干燥15分钟。在15分钟后,使样品板暴露在紫外灯下并进行基于时间的透光率扫描。这种扫描得出在单点处的给定样品在整个波长范围内的透光率。所述点接连暴露在UV灯下并以5分钟为间隔进行透光率扫描。在360纳米下的透光率对应于Parsol 1789的特定波长。记录在360纳米下的透光率值并用于使用下列公式获得该体系中残留的Parsol 1789的百分比。
%残留=
使用在transpore胶带上没有样品的空白板获得基准透光率扫描。
实施例1和2的在UV辐射暴露后残留的Parsol 1789百分比的数据显示在表3中。
表3中的数据表明本发明的组合物(实施例2)中的UV-A遮光剂在一段时间内比常规组合物(实施例1)更稳定。
实施例3至7与常规组合物相比本发明的遮光组合物(也含有UVB遮光剂)的稳定性
制备根据本发明的实施例(4至7)的各种其它遮光微乳液组合物并与常规霜组合物(实施例3)比较。在所有实施例3至7中,除UV A遮光剂(Parsol 1789)外还包括UV B遮光剂(Parsol MCX)。
实施例3的组合物如表4中所示。使用类似于实施例1的方法制备这种组合物。
成分 | 重量% |
甘油 | 1.00 |
硬脂酸(Hysteric acid) | 18.00 |
氢氧化钾 | 0.67 |
鲸蜡醇 | 0.53 |
Parsol 1789 | 0.40 |
Parsol MCX | 0.75 |
苯氧基乙醇 | 0.20 |
肉豆蔻酸异丙酯 | 0.75 |
硅油 | 0.50 |
二氧化钛 | 0.90 |
水 | 至100 |
实施例4至7的组合物显示在表5中。
实施例4 | 实施例5 | 实施例6 | 实施例7 | |
成分 | 成分,重量% | 成分,重量% | 成分,重量% | 成分,重量% |
乳化剂 | Brij 97,18.00 | AOT,14.00 | C12EO3,34.50 | Brij 35,28.00 |
疏水液体 | IPP,31.30 | IPP,56.52 | LLPO,34.50 | IPM,14.00 |
辅助乳化剂 | 1-丁醇 18.00 | 1-丁醇 7.73 | IPA 15.00 | 1-丁醇 28.00 |
Parsol 1789 | 0.40 | 0.40 | 0.40 | 0.40 |
Parsol MCX | 0.75 | 0.75 | 0.75 | 0.75 |
水 | 至100 | 至100 | 至100 | 至100 |
在上表中,使用下列标号
IPP - 棕榈酸异丙酯
Brij 97是非离子聚乙二醇单乙醚类型的表面活性剂
AOT是阴离子型表面活性剂并代表aerosol OT,其是二-2-乙基己基磺基丁二酸钠。
C12EO3(三氧乙烯十二烷基醚)是非离子烷基乙氧基化物类型的表面活性剂
LLPO是轻液态石蜡油
IPA是异丙醇
IPM是肉豆蔻酸异丙酯。
使用与用于制备实施例2的方法类似的方法制备实施例4至7的液态透明微乳液组合物。
使用对实施例1和2描述的方法测量实施例3至7的组合物的稳定性。
实施例3至7的在暴露于UV辐射后残留的Parsol 1789百分比的数据显示在表6中。
表6中的数据表明本发明的组合物(实施例4至7)中的UV-A遮光剂比常规组合物(实施例3)更随时间稳定。此外,检查实施例4至7的微乳液组合物并发现对肉眼而言清澈透明,由此证实其中的微滴尺寸小于100纳米。
实施例8和9:微乳液组合物与乳状液组合物的比较
制备表7中所示的乳状液组合物(实施例8和9),其中也重复相应的微乳液组合物(实施例7和4)的组成。相应的微乳液是指组成在相图上挨着(close together)。
实施例7 | 实施例8 | 实施例4 | 实施例9 | |
成分 | 成分,重量% | 成分,重量% | 成分,重量% | 成分,重量% |
乳化剂 | Brij 35, 28.00 | Brij 35, 25.50 | Brij 97, 18.00 | Brij 97, 15.00 |
疏水液体 | IPM, 14.00 | IPM, 18.00 | IPP, 31.30 | IPP, 32.00 |
辅助乳化剂 | 1-丁醇28.00 | 1-丁醇25.50 | 1-丁醇18.00 | 1-丁醇15.00 |
Parsol 1789 | 0.40 | 0.40 | 0.40 | 0.40 |
Parsol MCX | 0.75 | 0.75 | 0.75 | 0.75 |
水 | 至100 | 至100 | 至100 | 至100 |
使用如下所述的程序测量表7中所列的各种组合物的%透光率。
使用SPF-290S (Optometries Corporation)进行透光率测量。使用Transpore胶带(3M)作为基底以评估所有制剂的稳定性。将transpore胶带伸展在样品支架上并在其上施加2毫克/平方厘米的样品,使用注射器以小圆点形式均匀分布。使用石蜡膜作为指套,根据仪器制造商提供的程序垂直和水平地交替划动以使样品均匀铺展在transpore上。使该膜干燥15分钟。在15分钟后,使样品板暴露在紫外灯下并进行透光率扫描。这种扫描得出给定样品随波长而变的透光率。对单个板而言,该仪器扫描六个不同的点。对2个另外的板进行同样的报告。报告的数据因此是18个读数的平均值。
使用在transpore胶带上没有样品的空白板获得基准透光率扫描。在宽波长范围(290至400纳米)内的%透光率数据显示在图1和2中。数据表明,本发明的微乳液组合物(实施例7和4)的%透光率低于本发明的乳液组合物(实施例8和9),由此提供更好的光防护。
实施例10至12:与本发明外的那些相比本发明内的遮光组合物的稳定性
制备如表8中所示的组合物并与组合物7至9的那些类似地测量各种组合物的透光率。在0时间和暴露于UV辐射30分钟后测量数据。%透光率数据显示在表8中。
实施例10 | 实施例11 | 实施例12 | |
成分 | 重量% | 重量% | 重量% |
乳化剂,Brij35 | 28.50 | 15.00 | 5.00 |
疏水液体,IPM | 14.00 | 18.00 | 18.00 |
辅助乳化剂,1-丁醇 | 28.00 | 25.50 | 25.50 |
Parsol 1789 | 1.20 | 1.20 | 1.20 |
Parsol MCX | 2.25 | 2.25 | 2.25 |
水 | 至100 | 至100 | 至100 |
%透光率,0时间 | 13.4 | 35.1 | 71.3 |
%透光率,30分钟 | 29.2 | 43.4 | 78.4 |
表8中的数据表明具有在要求保护的范围内的乳化剂浓度的本发明内的组合物(实施例10和11)与本发明外的组合物(具有低于要求保护的范围的乳化剂浓度的实施例12)相比提供良好光防护(低的%透光率值)。
Claims (11)
1.具有在4至100纳米尺寸范围内的分散相微滴的微乳液形式的耐光遮光组合物,所述耐光遮光组合物包含,
a. 0.1 %至10 重量%的二苯甲酰甲烷或其衍生物;
b. 10至40重量%的乳化剂;
c. 5至40重量%的选自C2至C8直链或支链醇、多元醇和C5至C8低分子量脂肪酸的辅助乳化剂;
d. 10至50重量%的在25ºC下log P值大于3和在25ºC下水溶度小于0.1重量%的疏水液体;和
e. 10至50重量%的水,
其中所述乳化剂是非离子型表面活性剂;
其中所述二苯甲酰甲烷衍生物选自4-叔丁基-4'-甲氧基二苯甲酰甲烷、2-甲基二苯甲酰甲烷、4-甲基-二苯甲酰-甲烷、4-异丙基二苯甲酰甲烷、4-叔丁基二苯甲酰甲烷、2,4-二甲基二苯甲酰甲烷、2,5-二甲基二苯甲酰甲烷、4,4'-二异丙基-二苯甲酰甲烷、2-甲基-5-异丙基-4'-甲氧基二苯甲酰甲烷、2-甲基-5-叔丁基-4'-甲氧基-二苯甲酰甲烷、2,4-二甲基-4'-甲氧基二苯甲酰甲烷或2,6-二甲基-4-叔丁基-4'-甲氧基-二苯甲酰甲烷。
2.如权利要求1中所述的组合物,其中所述非离子型表面活性剂选自聚乙二醇单乙醚(Brij)、聚山梨醇酯(Tween)、醇乙氧基化物和脂肪酸的聚氧乙烯酯。
3.如权利要求1或2所述的组合物,其包含10至30重量%的乳化剂。
4.如权利要求1中所述的组合物,其中所述辅助乳化剂选自乙醇、丙醇、丁醇、聚乙二醇、丙二醇和辛酸。
5.如权利要求1中所述的组合物,其包含5至30重量%的辅助乳化剂。
6.如权利要求1中所述的组合物,其中所述疏水液体选自烃、脂肪醇、脂肪醇酯、甘油三酯、脂肪酸和硅油。
7.如权利要求6中所述的组合物,其中所述疏水液体选自轻液态石蜡油、肉豆蔻酸异丙酯、棕榈酸异丙酯和硅油。
8.如权利要求1中所述的组合物,其中该微乳液是透明液体形式。
9.如权利要求1中所述的组合物,其中二苯甲酰甲烷衍生物是4-叔丁基-4'-甲氧基二苯甲酰甲烷。
10.如权利要求1中所述的组合物,其包含0.1 %至10 重量%的对甲氧基肉桂酸或其衍生物,所述衍生物选自2-乙基己基-对甲氧基肉桂酸酯、对甲氧基肉桂酸铵、对甲氧基肉桂酸钠、对甲氧基肉桂酸钾或对甲氧基肉桂酸的伯胺、仲胺或叔胺的盐。
11.如权利要求10中所述的组合物,其中所述对甲氧基肉桂酸衍生物是2-乙基-己基-4-甲氧基肉桂酸酯。
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CN1225814A (zh) * | 1997-12-01 | 1999-08-18 | 霍夫曼-拉罗奇有限公司 | 防晒剂组合物 |
EP1092414A2 (de) * | 1999-10-16 | 2001-04-18 | Beiersdorf Aktiengesellschaft | Kosmetische und dermatologische Lichtschutzformulierungen in Form von O/W.Makroemulsionen oder O/W-Mikroemulsionen, mit einem Gehalt an mehrfach sulfonierten Lichtschutzfiltern |
WO2001037798A1 (de) * | 1999-11-25 | 2001-05-31 | Cognis Deutschland Gmbh & Co. Kg | Sonnenschutzmittel |
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US4847071A (en) * | 1987-10-22 | 1989-07-11 | The Procter & Gamble Company | Photoprotection compositions comprising tocopherol sorbate and an anti-inflammatory agent |
JPH01288330A (ja) * | 1988-05-13 | 1989-11-20 | Shiseido Co Ltd | マイクロエマルション |
FR2658075B1 (fr) * | 1990-02-14 | 1992-05-07 | Oreal | Composition cosmetique filtrante photostable contenant un filtre uv-a et un beta,beta-diphenylacrylate ou alpha-cyano-beta,beta-diphenylacrylate d'alkyle. |
US5766575A (en) * | 1996-06-14 | 1998-06-16 | Chesebrough-Pond's Usa Co., Division Of Conopco, Inc. | Method and composition for skin lightening |
US6426078B1 (en) * | 1997-03-17 | 2002-07-30 | Roche Vitamins Inc. | Oil in water microemulsion |
DE19937299A1 (de) * | 1999-08-06 | 2001-02-15 | Cognis Deutschland Gmbh | Sonnenschutzmittel |
US20030082128A1 (en) * | 2001-10-24 | 2003-05-01 | Clariant International, Ltd. | Homogeneous mixtures of silicone oils and organic oils |
ES2377132T3 (es) * | 2004-09-01 | 2012-03-22 | Basf Se | Composición orgánica micro-particulada absorbente de UV |
BRPI0516174B1 (pt) * | 2004-09-29 | 2015-06-16 | Ciba Sc Holding Ag | Usos de agentes estabilizantes |
CA2590064A1 (en) * | 2004-12-15 | 2006-06-22 | Alzo International, Inc. | Novel cosmetic emulsions and emulsifiers exhibiting dilatant rheological properties |
JP5796931B2 (ja) | 2006-08-24 | 2015-10-21 | ユニリーバー・ナームローゼ・ベンノートシヤープ | 光安定性化粧用組成物 |
-
2011
- 2011-01-18 ES ES11700549.6T patent/ES2592958T3/es active Active
- 2011-01-18 MX MX2012009105A patent/MX341347B/es active IP Right Grant
- 2011-01-18 BR BR112012016604A patent/BR112012016604A2/pt not_active Application Discontinuation
- 2011-01-18 CA CA2788030A patent/CA2788030C/en active Active
- 2011-01-18 EA EA201201080A patent/EA024856B1/ru not_active IP Right Cessation
- 2011-01-18 CN CN201180008384.6A patent/CN102781403B/zh not_active Expired - Fee Related
- 2011-01-18 EP EP11700549.6A patent/EP2531263B1/en not_active Not-in-force
- 2011-01-18 JP JP2012551570A patent/JP5855582B2/ja not_active Expired - Fee Related
- 2011-01-18 US US13/574,821 patent/US20130004440A1/en not_active Abandoned
- 2011-01-18 WO PCT/EP2011/050620 patent/WO2011095392A2/en active Search and Examination
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1225814A (zh) * | 1997-12-01 | 1999-08-18 | 霍夫曼-拉罗奇有限公司 | 防晒剂组合物 |
EP1092414A2 (de) * | 1999-10-16 | 2001-04-18 | Beiersdorf Aktiengesellschaft | Kosmetische und dermatologische Lichtschutzformulierungen in Form von O/W.Makroemulsionen oder O/W-Mikroemulsionen, mit einem Gehalt an mehrfach sulfonierten Lichtschutzfiltern |
WO2001037798A1 (de) * | 1999-11-25 | 2001-05-31 | Cognis Deutschland Gmbh & Co. Kg | Sonnenschutzmittel |
Also Published As
Publication number | Publication date |
---|---|
MX341347B (es) | 2016-08-17 |
CN102781403A (zh) | 2012-11-14 |
CA2788030C (en) | 2018-01-02 |
EA024856B1 (ru) | 2016-10-31 |
EP2531263A2 (en) | 2012-12-12 |
US20130004440A1 (en) | 2013-01-03 |
ES2592958T3 (es) | 2016-12-02 |
JP5855582B2 (ja) | 2016-02-09 |
EP2531263B1 (en) | 2016-06-22 |
CA2788030A1 (en) | 2011-08-11 |
MX2012009105A (es) | 2012-09-07 |
EA201201080A1 (ru) | 2013-01-30 |
WO2011095392A2 (en) | 2011-08-11 |
JP2013518843A (ja) | 2013-05-23 |
WO2011095392A3 (en) | 2012-08-23 |
BR112012016604A2 (pt) | 2016-04-12 |
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